12465251220 has 48 divisors (see below), whose sum is σ = 35068154688. Its totient is φ = 3308309760.

The previous prime is 12465251213. The next prime is 12465251243. The reversal of 12465251220 is 2215256421.

It is a super-2 number, since 2×12465251220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479649 + ... + 504968.

It is an arithmetic number, because the mean of its divisors is an integer number (730586556).

Almost surely, 2^12465251220 is an apocalyptic number.

12465251220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12465251220 is an abundant number, since it is smaller than the sum of its proper divisors (22602903468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12465251220 is a wasteful number, since it uses less digits than its factorization.

12465251220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984840 (or 984838 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 12465251220 in words is "twelve billion, four hundred sixty-five million, two hundred fifty-one thousand, two hundred twenty".